Zobrazeno 1 - 10
of 297
pro vyhledávání: '"Tsuboi, Masato"'
M 87 is the best target for studying black hole accretion and jet formation. Reanalysis of the EHT public data at 230 GHz shows a core-knots structure at the center and jet features (Miyoshi et al. 2022a). We here compare this with the new results of
Externí odkaz:
http://arxiv.org/abs/2401.16117
Autor:
Peißker, Florian, Zajacek, Michal, Sabha, Nadeen B., Tsuboi, Masato, Moultaka, Jihane, Labadie, Lucas, Eckart, Andreas, Karas, Vladimir, Steiniger, Lukas, Subroweit, Matthias, Suresh, Anjana, Melamed, Maria, Clenet, Yann
To date, the proposed observation of Young Stellar Objects (YSOs) in the Galactic center (GC) still raises the question where and how these objects could have formed due to the violent vicinity of Sgr~A*. Here, we report the multi-wavelength detectio
Externí odkaz:
http://arxiv.org/abs/2302.14127
Atacama Large Millimeter/Submillimeter Array (ALMA) is promising to be a powerful tool for precision astrometry of the area around Sagittarius A$^\ast$ (Sgr A$^\ast$) because it has the high angular resolution, high sensitivity, and wide field of vie
Externí odkaz:
http://arxiv.org/abs/2204.06778
We present the results based on the 2.5 arcsec-resolution observations using Atacama Large Millimeter/submillimeter Array (ALMA) of the Galactic Center Molecular Cloud G-0.02-0.07, or the 50 km/s Molecular Cloud (50MC), in the SO (N_J=2_2-1_1) line a
Externí odkaz:
http://arxiv.org/abs/2105.09449
Autor:
Tsuboi, Masato, Kitamura, Yoshimi, Uehara, Kenta, Miyawaki, Ryosuke, Tsutsumi, Takahiro, Miyazaki, Atsushi, Miyoshi, Makoto
We performed a search of cloud-cloud collision (CCC) sites in the Sagittarius A molecular cloud (SgrAMC) based on the survey observations using the Nobeyama 45-m telescope in the C$^{32}$S $J=1-0$ and SiO $v=0~J=2-1$ emission lines. We found candidat
Externí odkaz:
http://arxiv.org/abs/2009.11461
Autor:
Tsuboi, Masato, Tsutsumi, Takahiro, Kitamura, Yoshimi, Miyawaki, Ryosuke, Miyazaki, Atsushi, Miyoshi, Makoto
The Galactic Center Lobe (GCL) is a peculiar object widely protruding from the Galactic plane toward the positive Galactic latitude, which had been found toward the Galactic Center (GC) in the early days of the radio observation. The peculiar shape h
Externí odkaz:
http://arxiv.org/abs/2007.09673
A radio source at the Galactic center Sgr A* is a prime supermassive black hole candidate and therefore key to developing our understanding of them. Time variations in the 230 GHz band flux of Sgr A* have been found with the Atacama Large Millimeter/
Externí odkaz:
http://arxiv.org/abs/2003.08601
Autor:
Tsuboi, Masato, Kitamura, Yoshimi, Tsutsumi, Takahiro, Miyawaki, Ryosuke, Miyoshi, Makoto, Miyazaki, Atsushi
The Galactic Center IRS 13E cluster is a very intriguing IR object located at $\sim0.13$ pc from Sagittarius A$^\ast$ (Sgr A$^\ast$) in projection distance. There are both arguments for and against the hypothesis that a dark mass like an intermediate
Externí odkaz:
http://arxiv.org/abs/2002.08508
Autor:
Tsuboi, Masato, Kitamura, Yoshimi, Tsutsumi, Takahiro, Miyawaki, Ryosuke, Miyoshi, Makoto, Miyazaki, Atsushi
IRS 7 is an M red supergiant star which is located at $5".5$ north of Sagittarius A$^\ast$. We detected firstly the continuum emission at 340 GHz of IRS 7 using ALMA. The total flux density of IRS 7 is $S_\nu=448\pm45 \mu$Jy. The flux density indicat
Externí odkaz:
http://arxiv.org/abs/2002.01620
Autor:
Tsuboi, Masato, Kitamura, Yoshimi, Uehara, Kenta, Miyazaki, Atsushi, Miyawaki, Ryosuke, Tsutsumi, Takahiro, Miyoshi, Makoto
We have observed the compact HII region complex nearest to the dynamical center of the Galaxy, G-0.02-0.07, using ALMA in the H42a recombination line, CS J=2-1, H13CO+ J=1-0, and SiO v=0, J=2-1 emission lines, and 86 GHz continuum emission. The HII r
Externí odkaz:
http://arxiv.org/abs/1909.13405